Taww, teflon is bad stuff to get hot because it decomposes into seriously bad compounds starting about 470F. Think HF (hydrogen fluoride), the stuff used to etch glass. Some modern non-stick uses a high temperature variant, or so I understand.
But I may have been wrong about Canare and teflon - I don't remember how I came to that conclusion back in the dark ages.
As for my components deserving better, I am still spending on things which yield unambiguous improvements, like vacuum capacitors, or things to protect equipment, like isolation transformers and Variacs for soft-starting the power supplies. Until I have finished there, I just don't have money to spare for things that don't demonstrate conclusively in my system, and for which I see no theoretical advantage. YMMV
Thanks for the corrective note about Canare and teflon.